Agree with Mosh, the fans are annoying enough as is, without a bait like that. I'd also say that it's much easier to get together when 3/4s of members are from the same band that tours, records and generally spends time together, unlike now when they're split into at least three separate entities at any given time (whoever wrote this on the forum? "Fuck him and his Constant Motion").
Also, on a personal level, I just feel they're at a different place now. LTE at least to me is connected to a very specific period of time and despite it not being meant in that way, it always felt kinda like a "bonus" for the fans - among the lines of Evening with Petrucci and Rudess or all those "official bootlegs" when they re-created Master of Puppets or DSOTM in concert... I don't see them doing something like this now. But like I said, it's a subjective thing, there's really no reason why they couldn't. It's just all this stuff stopped quite some time ago.
And that's why I miss Portnoy (also because the second half of his tenure, in the 00s, really clicked with me personally in many ways, though I realise I'm in the minority here), but I also get very easily annoyed with the fans consistently whining for his return.
It won't be like that. It can't be. That ship has sailed. And what has been broken in the process, it ain't coming back.
You feel me?